Malicious PDF — malware analysis report

Static analysis result for SHA-256 35fd7af939c4ea71…

MALICIOUS

PDF

76.1 KB Created: 2020-11-26 10:19:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: b6d16d680055421f360341cb81ee5b4f SHA-1: 96967029046610c232e205812c544f6b3ecdd766 SHA-256: 35fd7af939c4ea718a968217598a66366219c9964e97ab9d5f3f1dba2b9f8c7c
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://traffset.ru/123?utm_term=how+to+get+into+vet+school PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4367668/normal_5f9567288979e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481988/normal_5faae1660058a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367297/normal_5f9f1bb5f0176.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4425256/normal_5f978018026c0.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/c26b3e38-6b2d-4475-8cc0-5edcc03e7fee/4720234647.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6fe16e0e-db04-478e-b9ac-3cefb5bfc01e/24948346342.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6d6b6065-792d-4ec9-b92a-4852930ff29e/99543593759.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0eeeefb7-4586-471e-9bca-17b0a83f144a/uf_ben_hill_griffin_stadium_map.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5481fbe9-46c2-45a9-bdad-507a2b28d7c6/29202132244.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/41d26dc2-5b33-4ad4-8b12-edc6c30c722d/jeveritumapes.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/26095364-8406-439b-be2b-cf71c8a88011/sexinedaregu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fe75cbdd-b3aa-4635-b71b-280ac2d78f3e/30063771858.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000de60.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE60 4656 bytes
SHA-256: e02f7808c2c1a18704bbe36b53dd981d3928cfe2a885e855b40721e7c454b7f4
font_01_sfnt_off0000ee4f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE4F 11076 bytes
SHA-256: 2e7e02399e0d68bbd092d1f484936d4be8c7478b19da2dc09619b9acd1f7b399
font_02_sfnt_off000113f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x113F4 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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